Question

The probability of getting a number smaller than 10, counting an ace as 1, from a deck of cards

Answer 1

38%.

Explanation:

There are 52 cards in a deck, and 16 of them are smaller than 10 (2 through 9 in each of the four suits). In addition, there are four aces, which can be counted as 1. So there are 20 cards that meet the criterion of being smaller than 10, including the aces.

The probability of drawing one of these cards from a full deck is the number of favorable outcomes (20) divided by the number of possible outcomes (52):

Probability = 20/52 = 5/13 ≈ 0.38 or 38%

So the probability of getting a number smaller than 10, counting an ace as 1, from a deck of cards is approximately 38%.